day in boston. instead, he has been campaigning in ohio and pennsylvania. campaign aides are carefully watching some key places. among them, here is what they will be keeping an eye on. loudoun county, prince william county, and fairfax county. the candidate continues to try to get out every last vote. it was the final straw for mitt romney today. of huge crowds turned out to greet him in pittsburgh. >> thank you. >> mitt romney and paul ryan have made thousands of speeches, making the case he is the candidate best suited to growing the economy. >> thank you, lynchburg. thank you so much. >> it is up to the voters. mitt romney got up early to cast his vote in it massachusetts. today, the republican nominee held for one final push, appearing in both ohio and pennsylvania. >> this campaign process lots of flights, lots of trips. the more event i did, the more energy i seem to get. >> the candidate may be energized. the campaign staff is exhausted. no one is giving up. they think it will be close. we will be watching it throughout the evening and we will bring